<!-- 系统通知和提醒 -->
<div class="im-msg">
  <i class="notice-icon"></i>
  <p></p>
  <span class="msg-corner msg-lt"></span>
  <span class="msg-corner msg-rt"></span>
  <span class="msg-corner msg-lb"></span>
  <span class="msg-corner msg-rb"></span>
</div>
